Question Answers
Sahay Sir > Question Answers
The angles of elevation of the top of a tower from two points at a distance of 4 m and 9 m from the base of the tower and in the same straight line with it are complementary. Prove that the height of the tower is 6 m.
05
Oct
The angles of elevation of the top of a tower from two points at a distance of 4 m and 9 m from the base of the tower and in the same straight line with it are complementary. Prove that the height of the tower is 6 m. A kite is flying at a height [...]
An equilateral prism is made of glass of refractive index 1.5. Calculate the angles of minimum and maximum deviations. Given:
05
Oct
An equilateral prism is made of glass of refractive index 1.5. Calculate the angles of minimum and maximum deviations. Given: An equilateral prism is made of glass of refractive index 1.5. Calculate the angles of minimum and maximum deviations. Given: October 5, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
A straight highway leads to the foot of the tower, a man standing at the top of the tower observes a car at an angle of depression of 30 degree which is approaching the foot of the tower with uniform speed. Six seconds later, the angle of depression of the car is found to be 60 degree . Find the time taken by the car to reach the foot of the tower from this point.
05
Oct
A straight highway leads to the foot of the tower, a man standing at the top of the tower observes a car at an angle of depression of 30 degree which is approaching the foot of the tower with uniform speed. Six seconds later, the angle of depression of the car is found to be [...]
Tags:
a man standing at the top of the tower observes a car at an angle of depression of 30 degree which is approaching the foot of the tower with uniform speed. Six seconds later ,
A straight highway leads to the foot of the tower ,
the angle of depression of the car is found to be 60 degree . Find the time taken by the car to reach the foot of the tower from this point. ,
Refractive index of glass for red and violet colours are 1.50 and 1.60, respectively. Find: (a) The refractive index for yellow colour, approximately. (b) Dispersive power of the medium.
05
Oct
Refractive index of glass for red and violet colours are 1.50 and 1.60, respectively. Find: (a) The refractive index for yellow colour, approximately. (b) Dispersive power of the medium. approximately. (b) Dispersive power of the medium. Refractive index of glass for red and violet colours are 1.50 and 1.60 respectively. Find: (a) The refractive index [...]
A 1.2 m tall girl spots a balloon moving with the wind in a horizontal line at a height of 88.2 m from the ground. The angle of elevation of the balloon from the eyes of the girl at any instant is 60 degree. After some time, the angle of elevation reduces to 30 degree . (see Fig.). Find the distance travelled by the balloon during the interval.
05
Oct
A 1.2 m tall girl spots a balloon moving with the wind in a horizontal line at a height of 88.2 m from the ground. The angle of elevation of the balloon from the eyes of the girl at any instant is 60 degree. After some time, the angle of elevation reduces to 30 degree [...]
The refractive indices of flint glass for red and violet lights are 1.613 and 1.632, respectively. Find the angular dispersion produced by a thin prism of flint glass having refracting angle 5.
05
Oct
The refractive indices of flint glass for red and violet lights are 1.613 and 1.632, respectively. Find the angular dispersion produced by a thin prism of flint glass having refracting angle 5. respectively. Find the angular dispersion produced by a thin prism of flint glass having refracting angle 5. The refractive indices of flint glass [...]
As observed from the top of a 75 m high lighthouse from the sea-level, the angles of depression of two ships are 30 degree and 45 degree. If one ship is exactly behind the other on the same side of the lighthouse, find the distance between the two ships.
05
Oct
As observed from the top of a 75 m high lighthouse from the sea-level, the angles of depression of two ships are 30 degree and 45 degree. If one ship is exactly behind the other on the same side of the lighthouse, find the distance between the two ships. As observed from the top of [...]
From the top of a 7 m high building, the angle of elevation of the top of a cable tower is 60 degree and the angle of depression of its foot is 45 degree. Determine the height of the tower.
05
Oct
From the top of a 7 m high building, the angle of elevation of the top of a cable tower is 60 degree and the angle of depression of its foot is 45 degree. Determine the height of the tower. From the top of a 7 m high building the angle of elevation of the [...]
A point object O is placed at a distance of 62 cm in front of a concave mirror of focal length f = 20 cm. A glass slab of refractive index mu = 3/2 and thickness 6 cm is inserted between the object
05
Oct
A point object O is placed at a distance of 62 cm in front of a concave mirror of focal length f = 20 cm. A glass slab of refractive index mu = 3/2 and thickness 6 cm is inserted between the object A point object O is placed at a distance of 62 cm [...]
A ray of light is incident on a glass slab at grazing incidence. The refractive index of the material of the slab is given by mu = root (1 + y). If a thickness of the slab is d = 2 m, determine the equation of the trajectory
05
Oct
A ray of light is incident on a glass slab at grazing incidence. The refractive index of the material of the slab is given by mu = root (1 + y). If a thickness of the slab is d = 2 m, determine the equation of the trajectory A ray of light is incident on [...]